I would likely need some subs to know exactly whats going on, but you have bits of the image with up to 20% tilt error, however the focus is pretty good, (Software is maxpilote by the way, free just weird to use, no I don't know why the images are undersized
)
The star trails should be what you attack first, as you where guiding and its consistent, could it be something like you where only guiding on RA? with a poor polar alignment, the graph in PHD should give some indication here,
for that mount I would assume better than 2.5" RMS, you might want to check the backlash is adjusted, and there are no sticky points, when properly adjusted the rock should be as small as possible without the worm gear ever binding when turned by hand (remove the belt to check)
https://youtu.be/x79akiJO3pU
Next would be figuring out why some of your subs have a pretty nasty tilt, where cables getting dragged? or was that area imaged at a different time to the rest, e.g. battery change.